MOSCOW—Russia will no longer give the United States advance notice about its missile tests as envisioned under a nuclear pact the Kremlin has suspended, a senior Moscow diplomat said Wednesday, as its military rolled missile launchers across Siberia in a show of the country’s massive nuclear capability amid fighting in Ukraine.
Deputy Foreign Minister Sergei Ryabkov told Russian news agencies that Moscow has halted all information exchanges with Washington under the last remaining nuclear arms treaty with the United States after suspending its participation in it last month.
Along with the data about the current state of the countries’ nuclear forces routinely released every six months in compliance with the New START treaty, the parties also have exchanged advance warnings about test launches and deployments of their nuclear weapons. Such notices have been an essential element of strategic stability for decades, allowing Russia and the United States to correctly interpret each other’s moves and make sure that neither country mistakes a test launch for a missile attack….